Mold

Mold, as a Chinese invention, has matured during the Northern Wei Dynasty, but it was in the Song Dynasty that people applied it in the making of Yellow Rice Wine and has scientific detailed and accurate description of the production process, major points, testing tools and standards in the process. Strictly speaking, it began in the Northern Song Dynasty and matured in the Southern Song Dynasty. In Wine-making procedure by Su Dongpo, the description is rather complete. This at least shows that the technology was widely used in the Song Dynasty and was mature. It reflects to a certain level that there were many people with gifts about bio-technology applications and technological environment is formed.